Ash-drag.



F. GIRTANNER.

ASH DRAG. APPLICATION FILED DEC. 20, 1909- 968,84 4. Patented Aug. 30,1910.

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F. GIRTANNER.

ASH DRAG.

APPLICATION FILED DEG.20, 1909.

968,844. Patented Aug. 30, 1910.

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WITNESSES: "WE/V70 I. -l fi yi k Girtanner UNITED STATES PATENT OFFICE.

FREDERICK GIRTANNER, OF ST. LOUIS, MISSOURI, ASSIGNOR '10LACLEDE-CHRISTY CLAY PRODUCTS COMPANY, OF ST. LOUIS, MISSOURI, ACORPORATION OF MISSOURI.

ASH-DRAG.

Specification of Letters Patent Application filed December 20, 1909.

Patented Aug. 30,- 1910. Serial No. 534,105.

T all whom'it may concern:

Be it known that I, FREDERICK GIn'raN- NER, a citizen of the UnitedStates, residing at the city of St. Louis, State of Missouri, haveinvented a certain new and useful Ash- Drag, of which the following issuch a full, clear, and exact description as will enable any one skilledin the art to which 1t appertains to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecification.

My invention relates to an ash drag and more particularly to an ash dragfor use in connection with a chain grate furnace.

In the accompanying drawings which illustrate one form of ash drag made1 n accordance with my invention, Figure 1 1s a vertical centralsection; Fig. 2 is a top plan view partly in section; Fig. 3 1s a topplan view of the body of the frame of the conveyer; Fig. 4 is alongitudinal section of the part shown in Fig. 3; Fig. 5 is a verticalcross section on the line 5-5 of Fig. 2; Fig. 6 is a side view partly insection of one end of the conveyer frame; Fig. is a top plan view of thepart shown in Fig. 6 and Fig. 8 is an end view partly 1n section of theconveyer frame.

Like marks of reference refer to similar parts in the several views ofthe drawings.

10 represents a chain grate which maybe of any usual form. This grate 10is carried by a frame 11 mounted on wheels 12 running 011 a track 13.Arranged below the grate 10 is the ash pit let. Resting on the bottom ofthe ash pit 14: is a trough-shaped body 15 of the conveyer frame. Thisbody 15 is preferably formed of channel-iron and is made in two parts,as best shown in Figs. 3 and 4. The two parts are connected by means ofplates 16 which are rigidly secured to the rear part of the channel-iron15 and are pivoted. at 17 to the front part of the channeliron so thatthe two parts are hinged together. Outside of the plate 16 are securedupright angle-irons 18, the purpose of which will be hereinafter morefully described. Secured to the rear end of the channel-iron 15 are apair of bearings 19 in which is mounted a shaft 20. Upon this shaft 20is mounted a wheel 21 around which passes the chain 22 forming theendless conveyer for the ashes. I prefer to mount the shaft 20 rigidlyin the boxes 19 and loosely mount the wheel 21 on the shaft 20. Thelateral movement of the wheel 21 is prevented by means of collars 23 onthe shaft 20. In order to prevent oinders or other heavy objectscontained in the ashes from dropping directly upon the wheel 21, Iprefer to protect the same by means of a hood 24 as shown in Figs. 1 and2. At thefront end of the channel-iron 15 are secured a pair of blocks25 shown in detail in Figs. 6 and 7. In each of the blocks 25 is formeda pair of slots 26' through which pass bolts 27 securing in placebearings 28 carrying the driving shaft 29 of the conveyer. Upon theshaft 29' is mounted a sprocket wheel 34 which drives the conveyer chain22.

By loosening the nuts on the bolts 27 the bearings 28 can be movedrelatively to the frame 15 of the conveyer. In order tocurately makesuch adjustment I provide each of the blocks 25 with a lug 30 throughwhich passes a screw 31 bearing against the box 28 and provided with asquared-end 32 by means of which it may be rotated. A look nut 33 isprovided for securing the bolt 31 in position after the adjustment hasbeen: obtained. Inasmuch as the driving shaft 29 is fixed it isnecessary for the entire body 15 of the conveyer to move when theadjustment is made. Consequently the securing means for the body 15 mustalso be made adustable. I secure this by providing, a bolt 35 in thefloor of the ash pit 14 so as to project into a deepened portion 36 atthe front end of the ash pit. This bolt may be secured in any suitablemanner, such for instance, as by the angle iron 37 set into the floor ofthe ash pit as shown in Fig. 1. The

front end of the bolt 35 passes through an opening in an angle bar 38secured to the bottom of the channel iron 15. A nut 39 provides for anadjustable connection be tween the angle iron and the bolt. e

Arranged below the grate 10 and just above the upper ends of the anglebar 18' is a partition 40. This partition stops short of both ends ofthe ash pit so as to allow room at the rear for the ashes tofall downaround the conveyer 22 and to leave roomat the front end for theinsertion: and removal of the conveyer. By forming, the conveyer frameof two parts hinged together the forward end of the frame may be broughtup at a sharper angle and consequently removed through a smalleropening; between the partition and the front wall of the furnace thanwould be the case with a solid frame. In order to support the upperstrand of the conveyer 22 a rod 41 extends through the angle bars 18 andis secured in position by means of nuts 42. Surrounding the rod 41 is atube 43 which serves to hold the angle bars 18 at the proper distanceapart. Loosely mounted upon the tube 43 is a larger tube 44 which actsas a roller veyer to pass to the front end of the ash pit.

The space above the upper strand of the chain 22 is closed by an aircut-off 47 which is also preferably made in the form of a swinging valveso as to allow the passage of any object which might be carried by theupper strand of the conveyer chain 22. The conveyer is preferablyarranged at one side of the ash pit as shown in Figs. 2 and 5 and thepassage of air through the ash pit at the side of the conveyer isstopped by means of a swinging valve 48 as best shown in Fig. 5. Thisvalve can be thus made of sufficient size to allow the passage of aperson so that the conveyer may be repaired without removal from the ashpit. The pivoting together of the two parts of the conveyer frame,however, allows the same to be readily removed from the front end of theash pit when it is desired to do so.

The operation of my device will be evident from the above description.The ashes from the grate 21 fall down at the rear end of the ash pit andpile up around the conveyer chain 22. The chain being driven by anysuitable power applied to the shaft 29, the ashes are drawn forwardthrough the guideway formed by the channel iron 15 and are deposited inthe deepened portion 36 at the front end of the ash pit, from whichposition they can be moved by any suitable device which is not shown asit forms no part of the present invention.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. In an ash drag, the combination with a grate, of a frame arrangedbelow said grate, an endless conveyer carried by said frame, a swingingvalve situated between the upper and lower strands of said conveyer, andmeans for driving said conveyer.

2. In an ash drag, the combination with a grate, of a frame composed oftwo parts hinged together arranged below said grate,

an endless conveyer carried by said frame, a swinging valve situatedbetween the upper and lower strands of said conveyer, and means fordriving the conveyer.

3. In an ash drag, the combination with a grate, of a frame arrangedbelow said grate, a partition arranged between said grate and frame,anendless conveyer carried by said frame, a swinging valve situatedbetween the upper and lower strands of said conveyer, an air cut-offbetween the upper strand and said conveyer and said partition, and meansfor driving said conveyer.

4. In an ash drag, the combination with a grate, of a frame arrangedbelow said grate, a partition arranged between said grate and frame, anendless conveyer carried by said frame, swinging valve situated betweenthe upper and lower strands of said conveyer, a second swinging valvesituated between the upper strand of said conveyer and said partition,and means for driving said conveyer.

5. I11 an ash drag, the combination with a grate, of a frame composed oftwo parts hinged together arranged below said grate, a partitionarranged between said grate and frame, an endless conveyer carried bysaid frame, a swinging valve situated between the upper and lowerstrands of said conveyer, a second swinging valve arranged between theupper strand of said conveyer and said partition, and means for drivingsaid conveyer.

6. In an ash drag, the combination with a grate, of a partitionextending below said grate, a passage being left between each end ofsaid partition and the furnace walls, a frame arranged below saidpartition and formed of channel iron, said frame being hingedintermediate its length whereby the frame may be removed through theopening between the partition and the furnace wall, an endless conveyercarried by said frame, and means for driving said conveyer.

7. In an ash drag, the combination with a frame formed of channel-ironand hinged intermediate its length, of a pair of uprights carried bysaid frame adjacent to the hinge, a swinging valve carried by saiduprights, an endless conveyer carried by said frame and means fordriving said conveyer.

8. In an ash drag, the combination with a grate, of a frame arrangedbelow said grate and formed of channel iron, said frame being providedwith a hinge intermediate its length, a pair of uprights carried by saidframe adjacent to the hinge, a pair of pivoted valves carried by saiduprights, an endless conveyer carried by said frame, a support for saidconveyer carried by said uprights and means for driving said conveyer.

9. In an ash drag, the combination with a grate, of a frame arrangedbelow said grate, an endless conveyer carried by said frame, a drivingshaft for said endless conveyer, and means for securing relativelongitudinal movement between said driving shaft and frame.

10. In an ash drag, the combination with a grate, of a frame arrangedbelow said grate, an endless conveyer carried by said frame, a drivingshaft for said frame, means for securing relative longitudinal movementbetween said driving shaft and frame, and an adjustable connectionbetween said frame and the floor of the ash pit.

In testimony whereof, I have hereunto 15 set my hand and affixed my sealin the presence of the two subscribing witnesses.

FREDERICK GIRTANNER. [L- 8.]

Witnesses 4 WV. A. ALEXANDER, RHODES E. CAVE.

